Feed through assembly for a formable flat battery

a formable flat battery and assembly technology, applied in the field of batteries, can solve the problems of reducing the capacity of the battery, limiting the ability to make significant battery size reductions using conventional imd battery design principles, and the imd typically remains unusable. the volume of the imd is typically not significant, and the battery is not suitable for us

Inactive Publication Date: 2005-05-31
MEDTRONIC INC
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Problems solved by technology

However, reducing IMD battery size results in a corresponding reduction in battery capacity, which necessarily places limits on the ability to make significant battery size reductions using conventional IMD battery design principles.
Although a thoughtful design approach can help to reduce the amount of such dead space, an appreciable volume of space within the IMD typically remains unusable when employing a conventional IMD battery.

Method used

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  • Feed through assembly for a formable flat battery
  • Feed through assembly for a formable flat battery
  • Feed through assembly for a formable flat battery

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Embodiment Construction

[0029]In the following description of the illustrated embodiments, references are made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration, various embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized, and structural and functional changes may be made without departing from the scope of the present invention.

[0030]FIG. 1 is a simplified view of a medical device 21 implanted in a human body 10. The implantable medical device 21 shown in FIG. 1 employs a formable flat liquid electrolyte battery provided within an integral IMD battery housing in accordance with the principles of the present invention. According to one embodiment, IMD 21 incorporates a formable flat liquid electrolyte battery and a flexible wiring substrate that provides support for, and interconnection between, all or some of the electrical and electronic components of IMD 21.

[0031]FIG. 1 further shows a transd...

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Abstract

A body implantable medical device (IMD) includes a first shell and a second shell whose outer surfaces are biocompatible. The IMD further includes a battery enclosure defined by all or a portion of the first shell of the IMD housing and a cover. The cover of the battery enclosure is disposed between the inner surfaces of the first and second shells, has a greater rigidity than the first shell, and includes an improved feedthrough assembly for an electrochemical cell, such as a flat liquid electrolyte battery, provided in the battery enclosure. Electronic circuitry, supported on a flexible wiring substrate, is provided between the inner surface of the second shell and the cover of the battery enclosure. A hermetic seal is provided between the cover of the battery enclosure and all or a portion of the first shell.

Description

[0001]This application is a divisional of application Ser. No. 09 / 687,446, filed Oct. 13, 2000, now allowed now U.S. Pat. No. 6,498,951.FIELD OF THE INVENTION[0002]The present invention relates generally to batteries for use with an implantable medical device (IMD). More particularly, the present invention pertains to an integral housing of an implantable medical device for containing a formable flat battery.BACKGROUND OF THE INVENTION[0003]As implantable medical device (IMD) technology advances in an attempt to address a myriad of life sustaining / enhancing needs, issues such as IMD battery longevity, IMD size and shape, IMD mass, and patient comfort remain key considerations in the IMD design process. Much attention is typically placed on the power source of an implantable medical device during the IMD design process. It is appreciated that battery size and capacity, for example, significantly impact the physical configuration of the IMD and the duration of service time within the ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61N1/372A61N1/375H05K1/18
CPCA61N1/375H05K1/189A61N1/3758A61N1/37512
Inventor LARSON, LARY R.SUNDERLAND, WALTER C.
Owner MEDTRONIC INC
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